Jakub Zych
df67939251
- A per-element Preview toggle (aria-pressed, off by default) splits the editor 50/50 with an auto-fit grid that wraps the pane below on narrow widths. - The pane is an iframe with an empty sandbox, content set only through srcdoc, created on first use; it reads only the value getter, so previewing never edits or emits summer-change.